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RCI-1502 HRT Tele Boom Manual
6. Troubleshooting
The RCI-1502 system incorporates a number of software features that are designed to
help the service person quickly identify a fault,
however
it must be stressed that these
features cannot identify ev erything. They can only be use d as a guide to identify
additional checks that can be made. S ome notes are provid ed below, followed by
some example faults and possible causes.
1. Identify
the
symptoms.
Take time to find out exactly what is happening to
indicate a problem. If possible have the problem demonstrated so you can
"describe it in your own words". Sometimes what someone else has told
you is only part of the story.
2. Leave the calibration alone!
Too many times a re-calibration has been
attempted in order to rectify a problem before tha t prob lem has been
correctly identified. This leads to added confusion as the perspectiv e is
generally moved from the real fault to "calibration problems". We have often
received a message indicating that our display has "not accepted the
calibration data". Most times this is due to a fault in a cable or sensor which
was not identified prior to
re-calibration. Re-calibration must only be
performed when all physical inputs have been verified for correct operation,
and in actual fact is rarely ever needed.
3. Do you have your simulator with you?
A simulator is a very quick way to
verify if the fault is external to the display and will sav e you a lot of
heartache.
4. Have you read the manual?
When all else fails, read th e manual! Yo ur
answer may actually be in there.
5. Know what information you need to gather.
If y ou collect the correct
information from the display the job is half done. Before you
begin to
suspect faults with the system, you must satisfy yourself that the display is
correctly configured for the crane env ironment. In other words, check that
the correct duty, falls, slew zones etc. hav e been selected. Are all of the
sensors connected? In general if sensors have been supplied with the
system, they must always be connect ed. The display will check them
continuously and issue an error if t hat sensor cannot be detected. Check
your length, angle and radius against the chart to verify that the equipment
is permitted to be in that situation. If there is still a problem once these have
been checked, then you will need to check the hardware.
6. The main pieces of useful information
obtainable from the displays are
the
raw counts
. The raw count shows what the actual inputs are doing (i.e.
like a signal strength indication). These raw counts are manipulated in
software according to the calibration data stored in the display to produce
the readouts on the Display Unit. If the calibration
has been done
incorrectly, or the configuration is incorrect, or something else is wrong,
then the Display Unit readouts (e.g. t he LO AD or ANGLE values) may
provide you with misleading information.
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